First lady celebrates 49th birthday with dramatic new 'do!

For her 49th birthday on Thursday, First Lady Michelle Obama launched a new Twitter account and revealed a dramatic new hairstyle!

In the second tweet sent from her brand new @FLOTUS account (which stands for, naturally, First Lady of the United States), Mrs. Obama posted a photo with Inaugural citizen co-chair David Hall ahead of the MLK Day of Service Saturday — and unveiled a set of bangs.

The National Day of Service, Mrs. Obama shared in an email to TODAY.com, is her "favorite event of inauguration weekend," when people from across the country volunteer in their communities in honor of Dr. Martin Luther King Jr.

Previously, her official Twitter handle was @michelleobama, which was run by an arm of the president's re-election team. The @FLOTUS account is run by the first lady's staff, but when she sends a tweet herself, she'll sign it with her initials, -mo.

The first tweet sent by the account explained the strategy:

A White House official said the Obamas planned to celebrate the first lady's birthday by dining with friends on Thursday evening at Cafe Milano, an upscale Italian restaurant in the Georgetown area of Washington, D.C.

President Barack Obama also wished his wife a happy birthday on his official Twitter account, posting a montage of their adorable moments together.

The President has not yet weighed in on the bangs.

This story was originally posted at 3:40 p.m. ET on Thursday, Jan. 17.